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L1. H. PARKER. SPRAY RozzLE. APPUCATION FILED UEC.1. l9l?A Patented July 8, 1919.

2 SHEETS-SHEET l.

Ira/venian Lee H .Park/ei',

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L. H. PARKER.

SPRAY NOZZLE. MPLICATION FILED DEC. I. 19|?.

1,309,596. Patented July s, 1919.

2 SHEETS-SHEET 2.

Inventor.' Lee H Parker, bv%@w %f? uLUMBIA rLANoowwH to.. wAsmNd'ron. D. c.

UNITED STATES PATENT OFFICE.

LEE H. PARKER, OF BOSTON, MASSACHUSETTS, ASSIGNOR T0 SPRAY ENGINEERING COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

SPRAY-NOZZLE.

Application filed December l, 1917.

To all folio/ft it may anew/lz.'

lie it hnown that I, Les H. PARKER, a citizen oi the United States, and a resident oi' Boston, in the county of Suffolk and State of Massachusetts, have invented an improvement in Spray-Nozzles, of which ilu: following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to spray nozzles of general application, but more particularly intended for distributing liquids or liquids containing more or less solid matter.

lllliile my invention is not restricted to auch use, an important object thereof is to provide a nozzle for cooling water in or in connection with cooling ponds, or for condenscrs, ice plants, mills or any industry requiring a supply of cooling water or liquid.

By the nozzle herein disclosed I form and distribute over preferably an extended area a spray composed of or comprising water or other liquid or suitable fluid, and in aeeinfdance with the disclosed and preferred embmlinient of my invention I discharge the liquid in a spray that is of substantially uniform homogeneity throughout. Such a spray may be used in any of the defined relui-.zn'is or for any other suitable purpose, as, for example, for spraying efliuent, for precipitating; or 'or spraying coal dust 'or other toi-eign nmtter. for air washing, for condensingvapors, for humidifying air and for other purposes.

In carrying out my invention, I project the fluid in a flaring spray. and within the nozzle I preferably simultaneously produce an inner jet which in this embodiment of my invention is a substantially central or axial jet and one or more surrounding jets which are preferably and for best results mixed within the mixing chamber of the nozzle. so that there is an effective mixture or blending of the jets `before they issue in --pi`z=y torni from the mixing chamber, which latter is preferably So shaped as or is provided with means to Cause impact and mixingl oi' the several jets within the confined :space of the mixing chamber of the nozzle.

In order that the principle of the invention may be readily understood, -I have in Specification of Letters Patent.

Patented J lily 8, 1919.

serial No. 204,962. i

the accompanying drawing disclosed a single type of nozzle embodying my invention and wherein- Figure l is a side elevation of such nozzle;

Fig. 2 is a vertical section thereof;

Fig. 3 is a plan view thereof;

Fig. 4 a plan view thereofl with the cap removed; and

Figs. 5, (i and T are reslwctively a vertical section and transverse sections on lines (ist and T T oi Fig. 5 of a slightly modified form of my invention.

Referring more particularly to the drawing the nozzle herein shown comprises a shell or casing 1, the lower end of which is adapted to be attached to a hose or pipe for conveying the water or other liquid. To that end, I have herein represented said shell or casing 1 as threaded at its lower end Preferably also the upper end of the shell or casing 1 is threaded as represented at 8 for the reception of the head or cap 4 of the nozzle which is inleriorly threaded. My in vention is, however, not limited to a nozzle wherein the parts 1 and 4: are separate or detachable, since they might be formed in a single niece. Preferably for convenience in manu acture the members 1 and l are detachable.

The head or cap 4 is provided with a suit` able. discharge orifice 5 herein represented as circular. The interior of the head or cap L1 constitutes a mixing chamber, and it is preferably tapering or more or less dome shaped, so that the streams of liquid are caused to mix and intermingle prior to their discharge through the outlet 5.

In the patent to Eneas, No. 1,101,261, dated June 23, 1.91%, there is disclosed a spray nozzle having a central axially arranged sleeve or tube through which the central or axial jet passes, surrounding spiral vanes being provided to convey a plurality of streams of liquid in spiral directions,` all the streams being caused to meet and interniingle within the mixing chamber.

` It is the purpose of my invention to prof vide an inner jet which in the disclosed cnibodiment of my invention (to which, however, I am not limited) is a central or substantially axial jet, and one or more surrounding preferably spiral jets, although u'ithin tluI hruud scope and purpose o'l my invention,y the surrounding jet or jote, niay he oi' any suitlible charaeter. l Hiialil in` th. cnsuing dcacription rel'cr to that (unhodinient of luy invention` wherein l have illustrated for purposes' of disclosure the prt-- l'crrcd cnihodiinent, the inner jet as substantially central or axial. lrci'cruhly the sTlrrounding jets arel formed hy reason ol' the provision nl' spirale which may he ot' any suitahli i-liaracter,y hut instead of prnridinrel 2l central tulle or sleeve For the central or .uihstanli;lll axial ich l oniit the physical tube or sleeve' ol' other eltuttent ddlihiitqY the circun'ileruitial boundary of the central or axial jet. I, however, obtain the. iilnli or central or sullstantiallly axial stretni or vict hy positionintT or forming` the vanos: or tipi-- ruls or other elemcntS hy which the surVv rouudin; r ict or jets` arc toriucd in :Such lnuuucr as to permit tlux patinage of the ur utr or neutral iet. lu tlu dischi-:ed out liofliuunt of my iuwution l hure accontplishtfl this result hy inwarillr terminating thii tant or rance; at :t .s'uilahlc distanw radially troni thtl axis'. ol' the now/.lc so as to leave an unohutructml axial prit ige through which tht` liquid pawns; in a straiglitstreain. Still I may` however. form or shape or phsition Said rane or Yanes in any way permitting the liquid to issue axially or euhstantially eenlrally between them or it'ithin the eonvolutione of the vane if a single one only loe employed.

ln aceoinplisl'iing the result in this particular forni ot my invention. l provide a plurality of spirals 6 in" any suitable pitch and of any suitable radial extent. I have herein represented said spirals as east or otherwise forn'iod with the shell or easing l, hut within the scope andJ purpose ot' my initiation. thcy may lu separately formed and attached thereto in any suitahle man ner. or positioned fri'etionally or otherwise Within the nozzle. Preferably the said spirals terminate ati or below the upper end of the .shell or easing 1, that is', at or below the base of the mining chamber, so that the liquid is Clisrhiired from the upper end ol the spirals` diree i y against the inner wall 7 ot the mixing chamber and in such manner that the stream or streams which are outwardly thrown under oentrifual force, are guided by the inner surfaeeql across the discharge openingr 5 Where or below which they ute'etthe initier, :iiid herein the central jet herein indicated `at 8, with the result that: all the jets are thoroughly mixed and interiuin l'e'd Within the mixing Chamber 8,`

and so that they issue tl'ierefrotn in a Haring spray o substantially untfor'm homogeneity in cross` S'ctin.'

Prefer'aiilyy each of the spirals (i at its lower end merges into the inner Surface 9 of the shell r casing 1 as indicated at 1t),and atl the upper cud cach ol maid spirals. alain merges into the inner wall ol the S i'ellot casing as indicated at l1. thus` prcsenting' as little ohstruction as possihlc to the spiral streams,'particularly at the lowcr end thereof. ln other words, the spiral or spirals t taper toward or arc ol gradually (lecreasmgr u'idtli at the points wlicrc they merge into the inncr surface oi' thc, shell 5l. lr'ithin the hroad scope and purpoza. ot my intention.y however, they may he ol' l'ull width at hoth their upper and their lnu'cr ends.` or ol' any suitable intermediate widths.

Since, however, an in'ipo-rtant but hy no means an exclusive use of my invention is the` spraying oi sewage., which centaine more or less Solid matter. l preferably la confstuct the spiral or 4spirals that they present the least resistance to th(` llow nl' the material, while preserriunr thc tlm nl the material in un inner and herein a reutral iet. and in ontx or nuu'c outer ietf-.1 which prcl'crahl) areI spiral. lreterahll.' and in t'lnl disclnscll cnihodininut ot tlu` in'vcnlioll. the diameter ot the inncr or suhstantially central opening; is at least suhzstantially one third the diameter of Aluid raue Janes and ie substantially equal to thc t'ull die aineter of the otitlet from the now/cle. thus permitting the ready use ot the nozzle. with a. liquid Containing solid matter, such as sewage. 1

In order further to decrease the obstruction presented hy the spiral or spirals, thev inner edge 1Q thereof is made roundingr in Pross section. as clearly indicated in Filet Q.

Preferably each of the Yanes is inatlo nl a deer-easing piteh, so that tht` .fsurrounfling jet or jets are broughtgradually troni the flow in the direction of the entering` .sstrealn to a lion' iu a direction at ai'iproiin:itcly right angles tu the stream flow and approximately tangential thereto. Thus, the surrounding jet or jet-S are. with the least pmA sible obstruction, brought into a. direction of lloW Sons thoroughly lo niiX and intermingle with the inner and herein the ceutral jet.

The inner and herein the central jet is preferably a straight one though within the seopeundj purpose of iny invention, it may he rotator? in Whole or in part- The cylin- Vtlriral surface of such inner and herein oent t it f .Centrifugal actlon, but the inner and. herein Central jet il; not under the influence of oentiifi al aetiori and i'naintains a Siu-betant'ially srag'ht course into the mixing ehamber 8;

lill

In the said mixing chamber the inner and herein central jet meets the surrounding jet or jets and thus the liquid or fluid of the jets is mixed and blended Within a confined chamber or space. The mixed mass issues from the chamber in a spray which is of substantially uniform homogeneity throughout.

While the several jets or streams are mixed Within the mixing chamber 8', substantially as set forth in the said patent to Eneas, No. 1,101,264, I have found in practice that the described provision of means for effecting the formation of an inner and herein a central jet and one or more surrounding jets peculiarly cooperates with the mixing chamber and particularly in that the liquid from all the jets enters with a minimum of obstruction into the mixing c-hamher and in streams of such unimpeded force as to result in an even more effective mixing than heretofore. Moreover, I find that in some cases there is or may be a preliminary mixing at the very base of the mix.- ing chamber, that is, at the point Where the several streams enter thereinto. This is owing to the fact that no physical wall is present, so as accurately or exactly to define the shape or radial extent of the inner and herein central jet or stream.

lVithin the scope and purpose of my invention, the mixing chamber need not be employed, although it preferably and for best results is employed, since so far as I am aware I am the first to effect the formation of an inner and herein a central jet and one or more surrounding jets in substantially the manner herein described.

As hereinbefore stated, the surrounding or outer jet or jets may be of any suitable character. While therefore I preferably use a spiral vane or vanes therefor, it is clear that the vane or vanes need not be of a spiral character so long as it or they are substantially a surrounding` or outer vane or vanes, so as to produce an outer or surrounding jet or jets.

Tithin the scope and -purpose of the invention, the so-calledcentral or axial jet need not be wholly axial or throughout the entire extent thereof and particularly at its lower end. The vane o-r vanes 6 may be so shaped that only throughout a portion of the length thereof does the water pass through axially, thus forming the central jet. The remainder of the length of the passage or space wherethrough passes the Water that ultimately forms the central or axial jet may he somewhat spiral or not truly axial, so that as to a portion at least of the course of the liquid that ultimately becomes the central or actual jet or stream, there may be somewhat of a whirling action. Throughout the upper portion, however, of the course of the liquid that beeomesthe cen- `jet of liquid incontact with of said inner edge or edges, the inner surtral jet, the liquid in the disclosed cmhodiment of the invention has a substantially truly axial or central location or relation with respect to the shell or casing l.

Thus, while for best results I prefer to have the central or axial jet truly centrall or axial throughout its entire extent and throughout substantially the entire length of the shell or casing 1, I may (referring to the disclosed embodiment of the invention) so construct the nozzle that the liquid docs not immediately, where it enters the nozzle, partake 0f such central stream character, provided it does so `before the mixing chamber is reached. In other words the liquid entering the nozzle might all come under the influence preliminarily of the vane or vanes, which are however so formed at their upper portions as to result in the formation of the said central jet or stream. This depends upon the shape and position of the inner edge of the vane or vanos. If a central plug or obstruction uhe provided at Athe hase of the vane or vanos, this is within the scope of my invention, since such plug or o-bstructifm, if present, is of rcstricted length, Iand the liquid immediately thereabove partailics of the said centralstream character. This form of my invention is represented in Figs. 5, (i and 7, wherein the central or axial obstruction is represented at 13, and the opening which is at one side thereof is represented at 14. It is here shown as of substantially the same diameter as in Fig. 2,

For the best results, and particularly where the nozzle is used in the spraying of sewage, or in the spraying of liquid containing more or less solid matter (to which use, however, my invention is in no wise limited), the central passage is of approximately one third of the diameter of the entire passage through the nozzle and is approximately the diameter of the outlet from the nozzle.

Having thus described one illustrative form of my invention, I desire it to he understood that although specific terms are employed, they are used in a generic and descriptive senso and not for purposes of limitation, the scope of the invention beingset forth in the following claims.

1. A spray nozzle comprising a shell or casing having an inlet and an outlet and also having one er more spirally arranged vanas between said inlet and outlet for directing the liquid in a spiral jet or jets, said vane or vanes having at least a portion of the inner edge thereof radially spaced from the axial center of the nozzle sutiieiently to leave an opening for-the passage of a central such portion face 'of the shell or casing in proximity to the outlet tapering inward to a markedly greater extent than the `preceding part of l ll the said surface, thereby to direct the spiral jet or jets in a marked change in direction into an intensified or increasing mixture with the particles of the central jet at a zone in proximity bo the outlet.

L. A spray novi/ile comprising a shell or casing having an inlet und an outlet and also having one or more spirally arranged vanesl between said inletl and outlet for direct-ing the liquid in a spiral jet or jets, saaid vane or vanes at the end thereof nearest the outlet having' the' innerJ edge or edges thereof radially spaced from the 'axial center of the nozzle sufficiently to leave an opening tor the passage of a central jet' of liquid in contact with the said edge of said vane or vanos, the inner surface of the shell or casing in proximity to the outlet tapering in'- uurd to a markedly greater extent than the preceding part of'the smid surface, thereby lo direct the spiral jet or jets in a marked change in direction into an intensified or inrrcasing mixture with the particles of the central jot at u zone in proximity 00 the outlet.

il. A spray nozzle comprising a shell or casing having an inlet and an outlet and also having one or more spirally arranged vaines between said inlet and outlet for directing the liquid in a spiral jet or jets, said vane or vanes having a portibn at least of the inner edge thereof' radially spaced from the axial center of the nozzle, thereby to leave an opening for the passage of a central jet of liquid in Contact with such portion of said inner edge or edges, and a mixing chamber in advance of said vane or vanes into which said central and said surrounding jet or jets are discharged and wherein they are thoroughly mixed before issuing from said outlet, the inner surface of the wall of said mixing chamber in proximity to the outlet tapering inwardly to a markedly greater extent than the preceding part of said surface, thereby to direct,` the spiral jet or jets in a marked change in direction into an increasing mixture with the paiticles of the central jet at a point in proximity to the said outlet.

4. A spray nozzle comprising a shell or casing having an inlet and an outletl and also having one or more spirally arranged vanes between said inlet and outlet for directing the liquid in a spiral jet or jets, said vane or variesy having va portion at least' of the inner edge thereof radially spaced from the axial center of the notzle thereby to leave an o niilgfor the passageiof acentrall jet of liq id in Contact With such portion of said inner edge or edges', tand ico-actin means for effecting the intermixing of all the jets and the issuance thereof from said outlet in a spray of substantially uniform homogeneity, sand: means including a mix*- ng chamber Within` aicli shell m caiifnythe asesinos inner surlaee 7' oil the Wall thereof in )roxitnity to the outlet' being tapered mar edly inward! in comparison with the preceding portionof thesurtaee or said wall.

A spray n'ozzlc comprising u shell or casing having an inlet and an outlet and alsohaving' one or more spirally arranged vanes bot-Ween said inlet and outlet for di rooting the liquid in a spiral jet or jets, said vane or vanes at the end' thereof nearest the outlet having the inner' edgc or edges thereof radially spaced tromthe axial center of the nozzle suiiiciently to leave an opening 'for the passage ot a central jet of liquid in contact With the said edge of the said vane or vanes, the inner edges of said venes at tbe end'thereof nearest the inlet being ot gradually increasing radial. extent in the direction of the lloW of liquid, thereby to lesson the obstruction presented `by said vane or vanos to the flow of the liquid.

(i. A spray nozzle comprising a shell or easing having one or more spirally arranged vanos between said inlet and outlet for directing the liquid in a spiral jet or jets, said vane or vanos having the inner odge or edges thereof al the end nearest the outlet radially spaced from'the' axial center of the nozzle silliiciently to leave an opening for the passage of a' centralv jet of liquid in eontact With the said edge of the said vaine or varies, the inner edges of said vane or vanos at 'both ends' thereof tapering toward and merging into the inner surface of the shell or easing".

7. A spray nozzle comprising a shell or casing having nn inlet and an outlet and also having one or more spirally arranged venes between said inlet and outlet for directing the liquid in a Spiral jet or jets, the inner edges of said vane or vanos being shaped and positioned to permit and eiteet the formation and passage of a substantially central' or axial jet that is Without a physical wall separating it fro-in the ont-er spiral jet or jets, whereby a preliminary meeting -or partial mixing of the liquid of theseveral' jets may occur at the exit end of said vane or varies the inner surface of the shell' or easing in proximity `tothe outlet tapering inward to e markedly greater extent than the precedingpartet the said sur'- face, thereby to direct thespiral jet or jets in a4 marked change in direction into an intensified er inereasing mixture with the parvieles ofthe central jet-at a rioneV in proxixhity tothe outlet.`

8. A spray' nozzle comprising a shell or casino having ail inlet and an outlet and also having one or more' spirally arranged venes between* Seidl hletl and outlet for directing theliqiiid in a` spiral jet or jets, and a mixing chamber in advance of the said varies and between thel same and said outlethufvings the pbrtidirof thes inner surface 7 of the Wall thereof tapered inwardly in proximity to the outlet markedly in comparison with the preceding portion of said surface, said vane or vanes having the inner edges thereof nearest the mixing chamber suliciently radially removed from the axial center of the nozzle to leave an opening for the passage of a central jet of liquid in contact with the said inner edge of said nine or vanes, `vhereby a preliminary contact or partial intermixing of said central andsurrounding jet or jets may occur within the base of the mixing chamber followed by a complete intermixing of said jets Within said chamber in proximity to said outlet and before issuance from the said outlet.

5). A spray nozzle comprising a shell casing having an inlet and an outlet and also having one or more spirally arranged vanes between said inlet and outlet for directing the liquid in spiral jet or jets, said vane or Yanes having the inner edge thereof radially spaced from t-he axial center of the nozzle, thereby to leave an opening for the passage ot a central jet of liquid in contact with said inner edge or edges, said vane or vanes being of decreasing pitch in the direction of the flow of liquid, thereby gradually to change the direction of flow of the liquid and to reduce to a minimum the friction thereof in its passage through the nozzle.

10. A spray nozzle comprising a shell or casing having an inlet and an outlet and also having one or more spirally arranged vanes between said inlet and outlet for directing the liquid in a, spiral jet or jets, said vane or vanes having the inner edge thereof radially spaced from the axial center of the nozzle, thereby to leave `an opening for the passage of a central jet of liquid in contact with such portion of said inner edge or edges, and a mixing chamber in advance of said vane or vanes, the inner surface of said mixing chamber being so shaped and the vane or vaines being of decreasing pitch in the direction of flow of the liquid, Whereby in coperation with the inner surface of the mixing chamiber the surrounding jet or jets are gradually brought from a flow in the direction of the entering stream to a flow at approximately right angles Vthereto and crossing the outlet Where they encounter the central jet and are thoroughly mixed thereby Within the mixing chamber.

11. A spraying nozzle comprising a shell or casing having an inlet and an outlet and also having one or more spirally arranged vanes between said inlet and outlet for directing the liquid in` a spiral jet or jets, said vane or venes having the inner edge thereof radially spaced from the axial center of the nozzle, thereby toy leave an opening for the passage of a central jet of liquid inicontact With such portion of said inner edge or edges, and a mixing chamber in advance of said vane or venes, the inner surface of said mixing chamber being so shaped that the surrounding jet or jets are brought from a flow in the direction of the entering stream to a flow at yapproximately right angles thereto, and crossing the outlet where they encounter the central jet and are thoroughly mixed thereby Within the mixing chamber.

12. A spraying nozzle comprising a shell or casing having means to produce a central jet and one or more surrounding jets, and a mixing chamber in advance of the means for producing said jets, said mixing cha-mber having an outlet, and the inner surface of the Wall of said chamber in proximity to said outlet being markedly tapering in comparison With the preceding part of said Wall, and so shaped as to direct said surrounding jet or jets in a direction which approximates a right angle to the direction of the inflow of the stream through the nozzle, whereby an intensified mixing action is effected in proximity to the said outlet.

18. A spraying nozzle comprising a shell or casing having means to produce a reir tral jet and one or more surrounding jets, and a mixing chamber in advance of the means for producing said jets, said mixing chamber having an outlet, and the inner surface of the Wall of said chamber in proximity to said outlet being of a flattened dome shape and extending from a preceding substantially cylindrical portion of said mixing chamber whereby said surrounding jet or jets are guided by said inner surface of the Wall in a direction which approximates a right-angle to the direction of the inflow of thestreaxn through the nozzle, and into thorough intermixing relation with the central jet.

14. A spray nozzle comprising a shell or casing having an inlet and an outlet and also having one or more spirally arranged vanes between said inlet and outlet for directing the liquid in a spiral jet or jets, the inner edges ofisaid vane or vanes being shaped and positioned to permit and ei'ect'the formation and passage of a substantially central or axial jet that is Without a physical Wall separatin it from the outer spiral jet or jets, Where y a preliminary meeting or partial mixing of the liquid of the several jets may occur at the exit end of said vane or vanes, and a mixing chamiber in advance of the said varies, said mixing chamber having atfits outlet the outlet for said shell or casing,` and the inner surface of the Wall of the `mixing chamber in proximity to said outlet being of a attened, dome shape and extending from a preceding, substantially cylindrical portion of said mixing chamber, whereby said surrounding jet or jets are guided by said inner surface of the Wall in a direction which approximates a right an- .ll ll Ibetween,"said inlet arid out glo to 'the `direction of the inflow of 4the stream through the nozzle and 'into thorough iutermixing relation with the eentral jet.

15. A spray nozzle comprising a shell or casing hailing an inlet and .an outlet und also having one or more spirally arranged Yanes between said inlet and outlet :for directing the liquid in a spiral jet or jetsgtlie inner edges ot' said vane or vaines `being shaped and positioned to permit land effect the formation and passage of a substantially central or axial jetthat is withouta physical Wall separating it roxnitlie outer spiralrget or jets, -Whereby a preliminary meeting `or partial mixing of thelliquid of the several jets may occur at the exit end of said vane or Yunes, said vane or varies being of dcereasingr pitch in the direction of `flow oi' liquid` thereby gradually tto change 'the direction of flow of the liquid and to reliure to a lnininiulu Athe l'iiotioii thereof in its passage through the nozzle. and a mixing eliain'bor in advance of the said Yanes, said mixing chamber har-ing as its outlet the outlet-for said shellor casing, and the inner surface of the wall of the mixing chamber in proximity to said outlet being of :i flattened, dome shape .and extending from a preceding,substantially oylindirieal portion of said mixing chamber, whereby said surrounding yjet or jets are guidedlhy said inner surfaoe ofthe -wall in a direction which approximates -a right angle tothedireetion ofthe inflow ofthe streaii'i through the nozzle and into `thorough intermixing relation with the centr-al jet.

16. A spray nozzle comprising a shell or easing having an inlet and an outlet and `also haring one ormore spirally arranged Yanes between said inlet and outlet for directing the liquid in a spiral jet or jets, the inner'edxges of said vene or Yv51-nes being shaped and positioned to permit-and-e'fleet the formation and passage of asubstantially central ,or inner jet that, iswvithouta physical Wall separatingfit Jfrom the outer spiral jet or jets, whereby a preliminary meeting or partial mixing ofthe liquidofthe seyeral jets may oeeur at theeXt-end of said vane or venes, the diameter dfsaid substantially central or 'inner jet J'being atlleestonethird `the diameter of the vilhdlpassage through the nozzle, thus tpermittin the ready use of the nozzle with Jliqu'i containing solidl matter. A Y

17. A spray nozzle comprising asliell or easinghaving an inlet and outlet and .also having one or more spirallj arrangedyanes et dor fljreeting Lge liquid in a' spirljet or jetsythe inner e ges of said or yenes bein ,shapedand positioned toy permit and ell'ect,A e Fformation and passage of a, substantially. central or 1nner ,jetthat is Without a physical Wall separating it lfrom the outer spiral jet orjets,

wllenehy la ipreluainany `meeting or partial mixing of tllielliquid of the several jetsI may Qcur et the exit end of said vane or runes, theidiameter of said substantially central or inner jet being atleast one-third the diamelelnofthe whole passage through the nozzle, thus (permitting the ready use of the nozzle with liquid containing solid matter, thel inlier suefaeeiof the shell or easing in proximity -to the outlet'tapering inward to a markedly greater extent than the prt-cedingpart of the said surface, thereby t0 dii-eet the spiral jet or jets in a marked change in direction into an intensified or 'ncreasingr mix-ture with .the particles of tiercntral jet as Ya zone in proximity to the said outlet.

1H. A spia)r nozzle romprisiupr a shell or oasinghaving an inlet and outlet and also haring one or more spirally arranged vanos between said inlet and outlet for direi'rtinn the yliquid `in a spiral jet or jets. the inner edges of said vane or vanos boingl shaped and positioned to permit and effect the formation and passage of a substantiall)v rentral or axial jet that is without u physical wall separatingr it from the outer spiral je( or jets, whereby `a ijlneliminaryY meetingr or jnirtialkniixing of the liquid of the several jets may occur atlthe exit end of said vane or vanos-the sulostantiallyY central or axial jet being ot approximately ythe lull diameter ottheoiitletifroinsaid nozzle, and the inner surface of the shell or easing in proximity `to the `outlet tapering inward to a markedly greater oxtentetlian the preceding part of'the said surface, thereby to direrttlul spiral jet-or jets in aimarked change in direction "into an intensilied or increasing mixture with-tliefparticles of the central jet at a zone i-n proximity Ato-the said outlet.

19. A spray nozzle comprising a shell or eosin ha-Jing yan inl-et and an outlet and lolsoair-ing one or more spirally arranged `variesbetween said inlet and outlet =for dirooting ftheiliquid, in a spiraljet 0r jets, the inner edges of -said Vane or vanos .being shaped and positioned togpemnit and eiert the Aformation end passage of V,a substantially oentrallor inner'jet-Ithat is Without a physical Walliseparating it from the outer -spiralfjet or i'ets,lthe diameter of `said central yjet being vatleastfsubstfamtially one-'third the ydiameter Aof said vane or vanos, thus permitting `the ready use offthe nozzle with lliquid eo-ntainingsolid'Inattensaid shell or easing having-a mixing chamber between Lthe outlet aandf said Yanes.

A-spray nozzle comprising a shell or Casin having anoutflet and an inletand else` airing-one or more inelined venes between said' inlet and outlet for directing the jliquidinan linelinexl outer jet or jets, the inneredges of said vane or venes being shaped and positioned to permit and e'lect -the formation and passage of @substantially ventral or iimer jet that is Without a physir-al wall separating it from the outer ineliued jet or jets, the diameter of said een-V tral jet being at least substantially the full diameter ot' said outlet and also of suflieient cross seetional area to permit the ready use of the nozzle with liquid containing solid matter, said shell or easing having a mixing rhamber between the outlet and said vane or Yanes.

2l. A spi-ajv nozzle comprising a shell or easing having an inlet and an outlet and also ha ring one or more spirally arranged Yanes between said inlet and outlet for direrting the liquid in al spiral jet or jets, the inner edges of said vane or vanes being shaped and positioned to permit and eii'ect the formation and passage of a substantially central or inner jet that is Without a physieal wall separating it from the outer spiral jet or pets, the diameter of said Central jet beingl at least substantially one-third the diameter oi said vane or Yanes and equal to the` full diameter of said outlet, thus permitting the ready use of the nozzle with a` liquid rontaining solid matter, said shell or easing having` a mixing chamber l'ietvveen the outlet and'said vane or Yanes.

:32. A spray nozzle eomprising aV shell or easing having an inlet and an outlet. and also haring one or more inclined Yanes between said inlet and outlet for direeting the liquid in an inrlined outer jet or jets` the inner portion ot' said vane or Yanes being shaped and positioned to permit and etl'eet the formation and passage of an inner jet that is without a physical wall separating it from the said inclined jet or jets, the di :mieter of said inner jet being at least onethird the diameter of said vane or Yanes.

:23. A sprayv nozzle comprising a shell or easing having an inlet and an outlet, and also having one or more inclined Yanes be- Coples o! this patent may be obtained for ve cents each, by addressing the tween said inlet and outlet for directing the liquid in an inrlined, outer jet or jets, the inner portion of said vane or varies being shaped and positioned to permit and effect the formation and passage of an inner jet that is without a ph Ysieal wall separating it from the said inclined jet or jets, the diameter of said inner` jet being at least substantially one-third the diameter of said vane or 'ane/s and said shell or easing having a mixing chamber between the outlet and said vane or Yanes.

24. A spray nozzle comprising a shell or casing having an inlet and an outlet and also having one or more inclined Yanes betiveen said inlet and outlet for directing the liquid in an inclined, outer jet or jets, the .inner portion of said vane or Yanes being shaped and positioned to permit and eii'eet the formation and passage of an inner jet that is without a physieal wall separating it from the said inclined jet or jets, the diaiueter of the inner jet being at least ouethird the diameter of the entire passage through the nozzle and also approximately the diameter of the outlet from the nozzle.

9.5. A sprayv nozzle comprising a shell or easing having au inlet and an outlet and also having one or more inclined vanes between said inlet and outlet tor directing the liquid in an inclined jet or jets, the inner portion of said vane or Yanes being shaped and positioned to permit and eli'eet the. formation and passage of an inner jet that is without a physical Wall separating it from the said inclined jet or jets, the diameter of the inner jet beine at least substantially the tull diameter o? the outlet from the nozzle and at least one-third the diameter of the entire passage through the nozzle.

In testimony whereof I have signed in v name to this specification.

LEE H. PARKER.

Commissioner of Patents,

Washington, D. C." 

